“A rat?” said Martin, mishearing me from the other room.
“Yum, dinner” said the dog, leaping up enthusiastically.
The creature came to rest on the wall, and we realised that it was neither a bat, nor a rat, (nor dinner) but actually a huge moth. It stayed long enough for Martin to measure its wing span; 15 cms, and it didn’t even object when I took photos. When nighttime fell, it took itself off out of the bedroom window.